Spring sash balancer



April 24, 1956 c. c. AMY

SPRING sAsH BALANCER 2 Sheets-Sheet l Filed April 16, 1953 apell'jw OR.

I c. c. AMY 2,743,127

SPRING SASH BALANCER Filed April 16, 1953d 2 Sheets-SheerI 2 April 24, 195e NVENTOR. Lrlfsfqpber Ally y to manufacture.

2,743,127 l ce Patented Apr.`24, 1956 2,743,127 SPRING lsnsn BALANCER Christopher C. Amy, Reno, Nev.

Application April 16, 1953, serial No. 349,126

3 claims. (Cl. 292-76)- This invention relates to a window construction, and more particularly to a spring sash balancer for a window.

This invention is an improvement overV the Spring Sash Balancers shown inmy co-pending applications, Serial Nos. 223,406, now Patent No. 2,680,035, and 324,354.

The object of the invention is to provide a spring sash balancer which will minimize wear between the moving parts of the window andv will insure that the window can be .raised and lowered: smoothly as well as providing a moreeflicient means of holding the window sash immobile in its various adjusted positions.

Another object of the invention is to provide a spring sash balancer which will permit the sash to be readily removed from the window 'frame when the sash is to be cleaned, or painted or when a broken glass lis to be replaced, the 'sash being held against the parting bead to insure that the window will beweather and dust proof. A further object of the invention is to provide a spring sash balancer which is extremely simple and inexpensive Other objects and advantages will be apparent during the course ofthe following description.

In the accompanying drawings, forming a part of this application, and in which like numerals are used to designate like parts throughout the same:

` Figure 1 is a longitudinal sectional view taken through the window and showing the spring sash balancer of the present invention installed therein.

Figure 2 is a sectional view taken on the line 2 2 of Figure l. l f

Figure 3 is an elevational View showing the resilient pad pivoted in order to permit access to the screw.

Figure 4 is any elevational view'showing the spring sash balancer mounted on the sash, the window sash being shown in section.

Figure 5 is a side elevational view showing a moditied form of Vthe invention, with parts broken away and in section..

Figure 6 is an enlarged side elevational view, with parts broken away and in section, ofthe modified spring sash balancer shown in the upperportion of Figure 5.

Figure 7 is a front elevational view of the spring sash balancer of Figures 5 and 6. I p

Referring in detail to the drawings7 the numeral 1t) designates a stationary Window frame which may be fabricated of any suitable material, and slidably mounted in the frame 1t) is a lower window sash 11 and an upper sash 12, Figure 2. Each of the sashes 11 and 12 has the same construction, and parting beads 13 and 14 are interposed between the lower sash 11 and the upper sash 12. Each of the sashes may include the usual windowpane or glass 15'. A suitable metal strip 16 may be arranged between the side rails 17 of the window sashes and the adjacent portion of the window frame 10.

Each of the sashes is provided with a cut-out or recess 18 in one of the side rails 17. A metal jarnb liner 19 is arranged opposite to each of the recesses 18, and the liner 19 is provided with a plurality of vertically spaced corrugations or indentations therein for a purpose to be later described, the liner 19 being securedto the frame 10 by suitable securing elements such as by beads 14. Arranged opposite to the liner 19 is a stationary plate 21 which has an outwardly curved portion 22 onv its upper end, the plate 21 being secured to the 'rail 17 by a screw Z3. Slidably mounted in each of the recesses 18 is a bracket 24 which includes an upper curved portion 25 and a lower curved portion 27, the upper curved portion 25 terminating in an arcuate finger 26. A straight portion 28 interconnects they curved portions 25 and 27 together, and the straight portion 28 is provided with a slot 29 for slidably engaging the screw 23.

Stop members 30 and 31 may be provided for maintaim ing the sashes within the frame 10, and a bar 32 has its upper end pivotally connected to they upper section 25 by means of a rivet or pin 33. An insert or resilientpad 34 is secured to the bar 32, the insert or pad 34 being secured to the bar 32 by suitable securing elements such as rivets 35. The pad 34 is provided with a plurality of diagonally extending indentations or corrugations 36 whichare adapted to coact with the corrugations in the metal jamb liner 19.

From the foregoing it is apparent that a spring sash balancer has been provided which is an improvement over the Spring Sash Balancers shown and described in my co-pending applications Serial Nos. 223,406, now Patent No. 2,680,035, and 324,354. The bar 32 carrying the pad 34 can be pivoted or swung to the position shown in Figure l3 when it is desired to gain access to the screw 23. Also, in normal use the corrugations 36 in the pad 34 coact or engage the corrugations in the metal jamb liner 19 so that the window sash 11 or 12 will remain immobile in whatever position it is adjusted to or moved to. Further the springrsash balancer of the present invention permits the sash to be readily removed from the. frame when the sash is to be painted, cleaned, orv when the glass 15 is to be replaced. Thus, to remove the sash from the frame it is only necessary to move the sash to the left, Figures 1 or 2, whereby the curved portions 25 and 27 of the bracket 24 will be compressed so that the sash will be able to clear the stop member 13. Also, the bracket 24 is made of a light spring metal so that the curved portions 25 and 27 can ex suticientlywhen the window sash is being raised or lowered by hand.

' When the sash, such as the sash 12 is being lowered, the bracket 24 will slide upwardly with respect to the plate 21 since the screw 23 passes through the slot 29 in the bracket 24. This relative movement between the bracket 24 and the plate 21 causes the curved finger 26 to ride up on or engage the outwardly curved portion 22 to increase the drag or resistance that is necessary to lower the sash. However, when the sash is being raised, the curved iinger 26 will move off of the hump 22 or will move from the position shown in Figure 4 to the position shown in Figure l so that there will be less resistance offered as the sashv is lifted.

' The construction of the present invention eliminates the necessity of using coil springs, counterweights and the like, and the diagonal corrugations 36 urge theV sashes to a position to maintain the windows in a weather and dust proof condition.

As previously stated, the diagonal corrugations or recesses 36 serve to bias or force the sashes 11 and 12 against the parting beads13 and 14 when the top and bottom sashes are pushed into a closed position to thereby provide a more weather tight and dust resisting unit so that weather stripping is not necessary. The corrugated liners 19 tit tightly between the stops on the window frame so that when the bracket or spring member 24 is compressed, there will be suicient clearance on the opposite side of the sash to free the sash from the frame. Whenthe curved 'nger 26 engages the hump 22, as shown in Figure 4, as when the sash is being lowered, there will be increased tension so that accidental lowering of the sash is prevented. However, when the sash is being raised, the curved finger 26 will move off of the hump 22 to the position shown in Figure 1 from the position shown in Figure 4 so that there will be less friction between the moving parts. The pad 34 can be made of any suitable material such as rubber or ibr and the pad 34 coacts with thel liner 19 to eliminate wear and provide a smooth operation and a better means of holding the window sash immobile in any adjusted position. Thus, since the corrugations 36 in the pad 34 mesh with the corrugations in the metal jamb liner 19, the foregoing advantages will be accomplished.

Referring to Figures 5, 6 and 7 of the'drawings there is shown a slightly modified assembly wherein a difterent type of spring sash balancer is used. The modified spring balancer is indicated generally by the numeral 49 and this sash balancer includes a bracket 37 that may be made of spring metal. The bracket 37 in cludcs a lower curved portion 3S and an upper curved portion 39, there being a straight portion 40 interconnecting the curved portions 38 and 39l together. A screw 41 extends through the straight portion 40 and into the rail 17 of the sash.

The lower curved portion 38, terminates in a flat ear 42, Figure 6, and the upper end of the curved portion 39 terminates in a curved finger 43 for a purpose to be later described. A bar 44'has its lower end pivotally connected to the ear 42 by a pin or rivet 45, and the upper end of the bar 44 is provided with a transverse lip 46 for engagement with the finger 43. A pad 47 which may be made of any suitable yieldable mateiial such as rubber or felt is secured to the bar 44 by rivets 43, and the pad 47 may be provided with a plurality of diagonal indentations or corrugations 50 fer coactiori with the corrugations in the jamb liner 19.

Thus, it will be seen that in Figures 5, 6 and 7 there has been provided a modified arrangement for providing an eicient means of holding the window sash immobile in its various adjusted positions. The pad 47 may be made of rubber or liber or other yieldable material and is secured to the bar 44 by the pair of rivets 48. The pad 47 is corrugated as at 50 and such corrugations mesh with the corrugations on the ymetal jamb liner 19. The screw 41 can be rotated to regulate the tension of the pad 47 against the jamb liner whereby the freedom of the sliding action of the windowsash can be adjusted. Thus, when the screw 41 is tightened, the tension is increased since the pressure on the center portion 40 of the spring bracket 37 forces the lip 42 and finger 43 to raise and thereby put extra pressure on the pad 47. Similarly, when the screw 41 is loosened the opposite action results so that tension is released. The spring sash balancer 49 can be used in connection with the previously described spring sash balancer as shown in Figure 5. The two spring sash balancers can be used in Figure when the device is being used on a heavy sash, or it can be used alone ona smaller window;

The liner 19 may be secured in place without the use of nails or screws and this is accomplished by forming tongues 51 on the beads 14 which extend through Cil , 4 l slots 52 in the jamb liner 19. The beads 14 may be secured in any suitable manner to the frame 10. The tongue 51 will coact withrecesses 53 and 54 in the members 31 and 30, respectively, to securely anchor the jamb liner 19 in place. Also, metal or rubber weatherstrips on the market as conventional items can be used if desired.

I claim:

1. A spring sash balancer comprising a bracket pro vided with an upper curved portion and a lower curved portion, a straight portion interconnecting said curved portions together, a securing element extending through said straight portion, an ear extending downwardly from Y the lower curved portion, a linger extending upwardly from said upper curved portion, a bar pivotally con nected to said ear and having a transverse lip on its upper end, a yieldable pad secured to said bar and provided with a plurality of spaced parallel corrugations therein, and a corrugated jamb liner for coacting with the corrugations in said pad.

2. ln a spring sash balancer, a bracket provided with an upper curved portion and a lower curved'portion, a straight portion interconnecting said curved portions together, a securing element extending through said straight portion, an ear extending downwardlyv from the lower curved portion, a finger extending upwardly from said upper curved portion, a bar pivotally connected to saidI ear and having a transverse lip on its upper end, a yieldable pad secured to said bar and provided with` a plurality of spaced parallel diagonally extending corrugations therein, and a corrugated jamb liner for coaction with the corrugations in said pad, the upper and lower portions of said bracket being curved' in the same direction, said bar being longer than said pad, the lower end of said bar being flush with the lower end of said ear, the straight portion of said bracket being spaced from said bar.

3. In a spring sash balancer, a bracket provided with an upper curved portion and a lower curved portion, a straight portion interconnecting said curved portions together, a securing element extendingtthrough said straight portion, an ear extending downwardly from the lower' curved portion, a finger extending upwardly from said upper curved portion, a bar pivotally connected to said bracket and having a transverse lip on its upper end, a yieldable pad secured tosaid bar and provided with a plurality ofr spaced parallel diagonally extending corrugations therein, and a corrugated jamb liner for coaction with the corrugations in said pad.

' References Cited in the le of this patent UNITED STATES PATENTS 479,324 Broggelwirth July 19, 1892 942,716 Deskins Dec. 7, 1909 1,326,345 Horton Dec. 30, 1919 1,855,510 Bollier Apr. 26, 1932 2,495,713 Foster Jan. 3l,` 1950 2,680,035 Amy et al. June l, 1954 FOREIGN PATENTS 126,469 Australia Ian. 22, 1948 

